Digital Tuning Car Is Falling On Its Face Off The Line

I have a 2012 mustang gt (auto) the only thing done to it is mufflers I just had a tune put in a month ago and everytime I launch it, it bogs really bad 2.20 60ft normally stock tune 1.93 60ft I have taken it back to the guy and cant really tell me why except maybe the 3.15 gears but why would it do that with a tune and not stock

it wasn't emailed or dyno I ordered the tuner from his shop which is a mile from where I race every weekend he's made a few changes with it but same result out of over 30 runs I have made only 4 have been runs where it didn't bog

If by chance it is Traction control or torque control kicking in, as one poster added, try this. To disengage completely the traction and Torque control. At a Full Stop, hold the brake down and the traction control button at the same time for just over five seconds. The light will appear on the dash for traction control off. Now they both are truly off. Each time you restart your car, if you want both fully off, you will need to do the same brake and 5 second plus hold on the traction control button each time.